Abstract
This study is concerned with the flow around a circular cylinder when a dielectric barrier discharge (DBD) plasma actuator is mounted on the cylinder surface. Velocity fields around the cylinder are measured for the on and off modes of the plasma (pulse modulated drive). As a result, when the actuator is driven at a frequency that the drag force reduces (St=1.0), Karman vortex shedding is suppressed and its location shifts downstream compared to the Base case. On the other hand, at the frequency that the drag increases (St=0.18), the vortex shedding is enhanced.
